...and talk my son into buying a season pass, cause shelling out $40.00 each week is getting expensive.

Definitely get the season's pass. If you don't have to worry about whether it's worth paying the $40 for a few hours here and there, you'll actually go up more often. Unless you're 5 hours away or something.

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I told my kids, "Someday, you'll have kids of your own." One of them said, "So will you."
-- Rodney Dangerfield.